depressoid vs saddening

depressoid

adj

  • Depressing or miserable. 

  • Resembling depression. 

noun

  • A depressed or miserable person. 

saddening

adj

  • Causing feelings of sadness. 

noun

  • The darkening of a colour during dyeing. 

How often have the words depressoid and saddening occurred in a corpus of books? (source: Google Ngram Viewer )